POSITIVE VOLTAGE REGULATORS L7800SERIES

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■

OUTPUT CURRENT TO 1.5A

■

OUTPUT VOLTAGES OF 5; 5.2; 6; 8; 8.5; 9;

10; 12; 15; 18; 24V

■

THERMAL OVERLOAD PROTECTION

■

SHORT CIRCUIT PROTECTION

■

OUTPUT TRANSITION SOA PROTECTION DESCRIPTION

The L7800 series of three-terminal positive regulators is available in TO-220, TO-220FP, TO-220FM, TO-3 and D

²

PAK packages and several fixed output voltages, making it useful in a wide range of applications. These regulators can provide local on-card regulation, eliminating the distribution problems associated with single point regulation. Each type employs internal current limiting, thermal shut-down and safe area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltage and currents.

SERIES

POSITIVE VOLTAGE REGULATORS

Figure 1: Schematic Diagram

TO-220

D²PAK TO-3

TO-220FP TO-220FM

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Table 1: Absolute Maximum Ratings

Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied.

Table 2: Thermal Data

Figure 2: Schematic Diagram

Symbol Parameter Value Unit

V_I DC Input Voltage for V_O= 5 to 18V 35

for V_O= 20, 24V 40 V

I_O Output Current Internally Limited

P_tot Power Dissipation Internally Limited

T_stg Storage Temperature Range -65 to 150 °C

T_op Operating Junction Temperature Range

for L7800 -55 to 150

for L7800C 0 to 150 °C

Symbol Parameter D²PAK TO-220 TO-220FP TO-220FM TO-3 Unit

R_thj-case Thermal Resistance Junction-case Max 3 5 5 5 4 °C/W

R_thj-amb Thermal Resistance Junction-ambient

Max 62.5 50 60 60 35 °C/W

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Figure 3: Connection Diagram (top view)

Table 3: Order Codes

TYPE TO-220 (A Type)

TO-220 (C Type)

TO-220 (E Type)

D²PAK (A Type) (*)

D²PAK (C Type)

(T & R)

TO-220FP TO-220FM TO-3

L7805 L7805T

L7805C L7805CV L7805C-V L7805CV1 L7805CD2T L7805C-D2TR L7805CP L7805CF L7805CT

L7852C L7852CV L7852CD2T L7852CP L7852CF L7852CT

L7806 L7806T

L7806C L7806CV L7806C-V L7806CD2T L7806CP L7806CF L7806CT

L7808 L7808T

L7810C L7810CV L7810CD2T L7810CP

L7812 L7812T

L7815 L7815T

L7818 L7818T

L7820 L7820T

TO-220 (Any Type)

TO-3 D

²

PAK (Any Type)

TO-220FP/TO-220FM

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Figure 4: Application Circuits

TEST CIRCUITS

Figure 5: DC Parameter

Figure 6: Load Regulation

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Figure 7: Ripple Rejection

Table 4: Electrical Characteristics Of L7805 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 10V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

(*) Load and line regulation are specified at constant junction temperature. Changes in V_O due to heating effects must be taken into account separately. Pulse testing with low duty cycle is used.

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V_O Output Voltage T_J = 25°C 4.8 5 5.2 V

V_O Output Voltage I_O = 5 mA to 1 A P_O≤ 15W V_I = 8 to 20 V

4.65 5 5.35 V

∆V_O(*) Line Regulation V_I = 7 to 25 V T_J = 25°C 3 50 mV

V_I = 8 to 12 V T_J = 25°C 1 25

∆V_O(*) Load Regulation I_O = 5 mA to 1.5 A T_J = 25°C 100 mV

I_O = 250 to 750 mA T_J = 25°C 25

I_d Quiescent Current T_J = 25°C 6 mA

∆I_d Quiescent Current Change I_O = 5 mA to 1 A 0.5 mA

V_I = 8 to 25 V 0.8

∆V_O/∆T Output Voltage Drift I_O = 5 mA 0.6 mV/°C

eN Output Noise Voltage B =10Hz to 100KHz T_J = 25°C 40 µV/V_O

SVR Supply Voltage Rejection V_I = 8 to 18 V f = 120Hz 68 dB

V_d Dropout Voltage I_O = 1 A T_J = 25°C 2 2.5 V

R_O Output Resistance f = 1 KHz 17 mΩ

I_sc Short Circuit Current V_I = 35 V T_J = 25°C 0.75 1.2 A

I_scp Short Circuit Peak Current T_J = 25°C 1.3 2.2 3.3 A

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Table 5: Electrical Characteristics Of L7806 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 11V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 6: Electrical Characteristics Of L7808 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 14V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

V_O Output Voltage I_O = 5 mA to 1 A P_O ≤ 15W V_I = 9 to 21 V

5.65 6 6.35 V

∆V_O(*) Line Regulation V_I = 8 to 25 V T_J = 25°C 60 mV

V_I = 9 to 13 V T_J = 25°C 30

I_O = 250 to 750 mA T_J = 25°C 30

V_I = 9 to 25 V 0.8

V_O Output Voltage I_O = 5 mA to 1 A P_O ≤ 15W V_I = 11.5 to 23 V

7.6 8 8.4 V

∆V_O(*) Line Regulation V_I = 10.5 to 25 V T_J = 25°C 80 mV

V_I = 11 to 17 V T_J = 25°C 40

I_O = 250 to 750 mA T_J = 25°C 40

V_I = 11.5 to 25 V 0.8

∆V_O/∆T Output Voltage Drift I_O = 5 mA 1 mV/°C

SVR Supply Voltage Rejection V_I = 11.5 to 21.5 V f = 120Hz 62 dB

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Table 7: Electrical Characteristics Of L7812 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 19V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 8: Electrical Characteristics Of L7815 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 23V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

11.4 12 12.6 V

V_I = 16 to 22 V T_J = 25°C 60

I_O = 250 to 750 mA T_J = 25°C 60

V_I = 15 to 30 V 0.8

14.25 15 15.75 V

V_I = 20 to 26 V T_J = 25°C 75

I_O = 250 to 750 mA T_J = 25°C 75

V_I = 18.5 to 30 V 0.8

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Table 9: Electrical Characteristics Of L7818 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 26V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 10: Electrical Characteristics Of L7820 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 28V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

17.1 18 18.9 V

V_I = 24 to 30 V T_J = 25°C 90

I_O = 250 to 750 mA T_J = 25°C 90

V_I = 22 to 33 V 0.8

19 20 21 V

V_I = 26 to 32 V T_J = 25°C 100

I_O = 250 to 750 mA T_J = 25°C 100

V_I = 24 to 35 V 0.8

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Table 11: Electrical Characteristics Of L7824 (refer to the test circuits, T

_J

= -55 to 150°C, V

_I

= 33V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 12: Electrical Characteristics Of L7805C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 10V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

V_O Output Voltage T_J= 25°C 23 24 25 V

22.8 24 25.2 V

V_I = 30 to 36 V T_J = 25°C 120

I_O = 250 to 750 mA T_J = 25°C 120

V_I = 28 to 38 V 0.8

∆V_O/∆T Output Voltage Drift I_O = 5 mA 3 mV/°C

4.75 5 5.25 V

V_I = 8 to 12 V T_J = 25°C 1 50

I_O = 250 to 750 mA T_J = 25°C 50

V_I = 7 to 25 V 0.8

∆V_O/∆T Output Voltage Drift I_O = 5 mA -1.1 mV/°C

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Table 13: Electrical Characteristics Of L7852C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 10V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 14: Electrical Characteristics Of L7806C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 11V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

V_O Output Voltage T_J = 25°C 5.0 5.2 5.4 V

4.95 5.2 5.45 V

V_I = 8 to 12 V T_J = 25°C 1 52

I_O = 250 to 750 mA T_J = 25°C 52

V_I = 7 to 25 V 1.3

∆V_O/∆T Output Voltage Drift I_O = 5 mA -1 mV/°C

V_d Dropout Voltage I_O = 1 A T_J = 25°C 2 V

I_sc Short Circuit Current V_I = 35 V T_J = 25°C 0.75 A

I_scp Short Circuit Peak Current T_J = 25°C 2.2 A

5.7 6 6.3 V

V_I = 9 to 13 V T_J = 25°C 60

I_O = 250 to 750 mA T_J = 25°C 60

V_I = 8 to 25 V 1.3

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Table 15: Electrical Characteristics Of L7808C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 14V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 16: Electrical Characteristics Of L7885C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 14.5V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

7.6 8 8.4 V

V_I = 11 to 17 V T_J = 25°C 80

I_O = 250 to 750 mA T_J = 25°C 80

V_I = 10.5 to 25 V 1

V_O Output Voltage T_J = 25°C 8.2 8.5 8.8 V

8.1 8.5 8.9 V

V_I = 11.5 to 17.5 V T_J = 25°C 80

I_O = 250 to 750 mA T_J = 25°C 80

V_I = 11 to 27 V 1

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Table 17: Electrical Characteristics Of L7809C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 15V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 18: Electrical Characteristics Of L7810C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 16V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

8.55 9 9.45 V

V_I = 12 to 18 V T_J = 25°C 90

I_O = 250 to 750 mA T_J = 25°C 90

V_I = 11.5 to 26 V 1

9.5 10 10.5 V

V_I = 13.5 to 19 V T_J = 25°C 100

I_O = 250 to 750 mA T_J = 25°C 100

V_I = 12.5 to 26 V 1

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Table 19: Electrical Characteristics Of L7812C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 19V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 20: Electrical Characteristics Of L7815C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 23V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

11.4 12 12.6 V

V_I = 16 to 22 V T_J = 25°C 120

I_O = 250 to 750 mA T_J = 25°C 120

V_I = 14.5 to 30 V 1

14.25 15 15.75 V

V_I = 20 to 26 V T_J = 25°C 150

I_O = 250 to 750 mA T_J = 25°C 150

V_I = 17.5 to 30 V 1

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Table 21: Electrical Characteristics Of L7818C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 26V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Table 22: Electrical Characteristics Of L7820C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 28V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

17.1 18 18.9 V

V_I = 24 to 30 V T_J = 25°C 180

I_O = 250 to 750 mA T_J = 25°C 180

V_I = 21 to 33 V 1

19 20 21 V

V_I = 26 to 32 V T_J = 25°C 200

I_O = 250 to 750 mA T_J = 25°C 200

V_I = 23 to 35 V 1

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Table 23: Electrical Characteristics Of L7824C (refer to the test circuits, T

_J

= 0 to 125°C, V

_I

= 33V, I

_O

= 500 mA, C

_I

= 0.33 µF, C

_O

= 0.1 µF unless otherwise specified).

Figure 8: Dropout Voltage vs Junction Temperature

Figure 9: Peak Output Current vs Input/output Differential Voltage

V_O Output Voltage T_J= 25°C 23 24 25 V

22.8 24 25.2 V

V_I = 30 to 36 V T_J = 25°C 240

I_O = 250 to 750 mA T_J = 25°C 240

V_I = 27 to 38 V 1

(16)

Figure 10: Supply Voltage Rejection vs Frequency

Figure 11: Output Voltage vs Junction Temperature

Figure 12: Output Impedance vs Frequency

Figure 13: Quiescent Current vs Junction Temperature

Figure 14: Load Transient Response

Figure 15: Line Transient Response

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Figure 16: Quiescent Current vs Input Voltage

Figure 17: Fixed Output Regulator

NOTE:

1. To specify an output voltage, substitute voltage value for "XX".

2. Although no output capacitor is need for stability, it does improve transient response.

3. Required if regulator is locate an appreciable distance from power supply filter.

Figure 18: Current Regulator

V_xx I_O =  + I_d

R₁

(18)

Figure 19: Circuit for Increasing Output Voltage

Figure 20: Adjustable Output Regulator (7 to 30V)

Figure 21: 0.5 to 10V Regulator

I_R1 ≥ 5 Id R₂

V_O = V_XX(1+  ) + I_dR₂ R₁

R₄ V_O = V_xx 

R₁

(19)

Figure 22: High Current Voltage Regulator

Figure 23: High Output Current with Short Circuit Protection

Figure 24: Tracking Voltage Regulator

V_BEQ1 R₁ =  I_Q1

I_REQ - βQ1 V_BEQ1 I_O = I_REG + Q₁ (I_REG)R₁

V_BEQ2 R_SC = 

I_SC

(20)

Figure 25: Split Power Supply (± 15V - 1 A)

* Against potential latch-up problems.

Figure 26: Negative Output Voltage Circuit

Figure 27: Switching Regulator

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Figure 28: High Input Voltage Circuit

Figure 29: High Input Voltage Circuit

Figure 30: High Output Voltage Regulator

Figure 31: High Input and Output Voltage

V_IN = V_{I -}(V_Z + V_BE)

V_O = V_{XX +}V_Z1

(22)

Figure 32: Reducing Power Dissipation with Dropping Resistor

Figure 33: Remote Shutdown

Figure 34: Power AM Modulator (unity voltage gain, I

_O

≤ 0.5)

NOTE: The circuit performs well up to 100 KHz.

V_{I(min) -}V_{XX -}V_DROP(max) R = 

I_{O(max) +}I_d(max)

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Figure 35: Adjustable Output Voltage with Temperature Compensation

NOTE: Q₂ is connected as a diode in order to compensate the variation of the Q₁ V_BE with the temperature. C allows a slow rise time of the V_O.

Figure 36: Light Controllers (V

_Omin

= V

_XX

+ V

_BE

)

Figure 37: Protection against Input Short-Circuit with High Capacitance Loads

R₂

V_O = V_XX(1+ ) + V_BE R₁

V_O rises when the light goes up V_O falls when the light goes up

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DIM. mm. inch

MIN. TYP MAX. MIN. TYP. MAX.

A 11.85 0.466

B 0.96 1.05 1.10 0.037 0.041 0.043

C 1.70 0.066

D 8.7 0.342

E 20.0 0.787

G 10.9 0.429

N 16.9 0.665

P 26.2 1.031

R 3.88 4.09 0.152 0.161

U 39.5 1.555

V 30.10 1.185

TO-3 MECHANICAL DATA

P003C/C

EB

R

C D P A

G

N

VU O

(25)

DIM. mm. inch

A 4.40 4.60 0.173 0.181

b 0.61 0.88 0.024 0.034

b1 1.15 1.70 0.045 0.067

c 0.49 0.70 0.019 0.027

D 15.25 15.75 0.600 0.620

E 10.0 10.40 0.393 0.409

e 2.4 2.7 0.094 0.106

e1 4.95 5.15 0.194 0.203

F 1.23 1.32 0.048 0.051

H1 6.2 6.6 0.244 0.260

J1 2.40 2.72 0.094 0.107

L 13.0 14.0 0.511 0.551

L1 3.5 3.93 0.137 0.154

L20 16.4 0.645

L30 28.9 1.138

φP 3.75 3.85 0.147 0.151

Q 2.65 2.95 0.104 0.116

TO-220 (A TYPE) MECHANICAL DATA

(26)

DIM. mm. inch

A 4.30 4.70 0.169 0.185

b 0.70 0.90 0.028 0.035

b1 1.42 1.62 0.056 0.064

c 0.45 0.60 0.018 0.024

D 15.70 0.618

E 9.80 10.20 0.386 0.402

e 2.54 0.100

e1 5.08 0.200

F 1.25 1.39 0.049 0.055

H1 6.5 0.256

J1 2.20 2.60 0.087 0.202

L 12.88 13.28 0.507 0.523

L1 3 0.118

L20 15.70 16.1 0.618 0.634

L30 28.9 1.138

φP 3.50 3.70 0.138 0.146

Q 2.70 2.90 0.106 0.114

TO-220 (C TYPE) MECHANICAL DATA

0015988/N

(27)

DIM. mm. inch

A 4.47 4.67 0.176 0.184

b 0.70 0.91 0.028 0.036

b1 1.17 1.37 0.046 0.054

c 0.31 0.53 0.012 0.021

D 14.60 15.70 0.575 0.618

E 9.96 10.36 0.392 0.408

e 2.54 0.100

e1 5.08 0.200

F 1.17 1.37 0.046 0.054

H1 6.1 6.8 0.240 0.268

J1 2.52 2.82 0.099 0.111

L 12.70 13.80 0.500 0.543

L1 3.20 3.96 0.126 0.156

L20 15.21 16.77 0.599 0.660

φP 3.73 3.94 0.147 0.155

Q 2.59 2.89 0.102 0.114

TO-220 (E TYPE) MECHANICAL DATA

(28)

DIM. mm. inch

A 4.40 4.60 0.173 0.181

B 2.5 2.7 0.098 0.106

D 2.5 2.75 0.098 0.108

E 0.45 0.70 0.017 0.027

F 0.75 1 0.030 0.039

F1 1.15 1.50 0.045 0.059

F2 1.15 1.50 0.045 0.059

G 4.95 5.2 0.194 0.204

G1 2.4 2.7 0.094 0.106

H 10.0 10.40 0.393 0.409

L2 16 0.630

L3 28.6 30.6 1.126 1.204

L4 9.8 10.6 0.385 0.417

L5 2.9 3.6 0.114 0.142

L6 15.9 16.4 0.626 0.645

L7 9 9.3 0.354 0.366

DIA. 3 3.2 0.118 0.126

TO-220FP MECHANICAL DATA

7012510A-H

(29)

DIM. mm. inch

A 4.50 4.90 0.177 0.193

B 2.34 2.74 0.092 0.108

D 2.56 2.96 0.101 0.117

E 0.45 0.50 0.60 0.018 0.020 0.024

F 0.70 0.90 0.028 0.035

F1 1.47 0.058

G 5.08 0.200

G1 2.34 2.54 2.74 0.092 0.100 0.108

H 9.96 10.36 0.392 0.408

L2 15.8 0.622

L4 9.45 10.05 0.372 0.396

L6 15.67 16.07 0.617 0.633

L7 8.99 9.39 0.354 0.370

L8 3.30 0.130

DIA. 3.08 3.28 0.121 0.129

TO-220FM MECHANICAL DATA

(30)

DIM.

mm. inch

A 4.4 4.6 0.173 0.181

A1 0.03 0.23 0.001 0.009

b 0.7 0.93 0.027 0.036

b2 1.14 1.7 0.044 0.067

c 0.45 0.6 0.017 0.023

c2 1.23 1.36 0.048 0.053

D 8.95 9.35 0.352 0.368

D1 8 0.315

E 10 10.4 0.393 0.409

E1 8.5 0.335

e 2.54 0.100

e1 4.88 5.28 0.192 0.208

H 15 15.85 0.590 0.624

J1 2.49 2.69 0.098 0.106

L 2.29 2.79 0.090 0.110

L1 1.27 1.4 0.050 0.055

L2 1.3 1.75 0.051 0.069

R 0.4 0.016

V2 0° 8° 0° 8°

D ² PAK (A TYPE) MECHANICAL DATA

0079457/J

(31)

DIM.

mm. inch

A 4.3 4.7 0.169 0.185

A1 0 0.20 0.000 0.008

b 0.70 0.90 0.028 0.035

b2 1.17 1.37 0.046 0.054

c 0.45 0.50 0.6 0.018 0.020 0.024

c2 1.25 1.30 1.40 0.049 0.051 0.055

D 9.0 9.2 9.4 0.354 0.362 0.370

D1 7.5 0.295

E 9.8 10.2 0.386 0.402

E1 7.5 0.295

e 2.54 0.100

e1 5.08 0.200

H 15 15.30 15.60 0.591 0.602 0.614

J1 2.20 2.60 0.087 0.102

L 1.79 2.79 0.070 0.110

L1 1.0 1.4 0.039 0.055

L2 1.2 1.6 0.047 0.063

R 0.3 0.012

V2 0° 3° 0° 3°

D ² PAK (C TYPE) MECHANICAL DATA

(32)

DIM.

mm. inch

A 180 7.086

C 12.8 13.0 13.2 0.504 0.512 0.519

D 20.2 0.795

N 60 2.362

T 14.4 0.567

Ao 10.50 10.6 10.70 0.413 0.417 0.421

Bo 15.70 15.80 15.90 0.618 0.622 0.626

Ko 4.80 4.90 5.00 0.189 0.193 0.197

Po 3.9 4.0 4.1 0.153 0.157 0.161

P 11.9 12.0 12.1 0.468 0.472 0.476

Tape & Reel D ² PAK-P ² PAK-D ² PAK/A-P ² PAK/A MECHANICAL DATA

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Table 24: Revision History

Date Revision Description of Changes

09-Nov-2004 12 Add New Part Number.

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